Trail Tech 732-FN6 TTV Temperature Switching Digital Radiator Fan Kit Fits: Honda CRF 250X/450X 2004-2015 Trail Tech's TTV Temperature Switching Fan Kit monitors your Honda's cooling system performance and automatically activates the fan to keep engine at optimum temperature range Featuring a custom adjustment of temperature trigger point with no cutting of fluid lines the kit includes: 4" SPAL Fan TTV Temperature Gauge Radiator Bracket Temperature Sensor and a Wire Harness Specs: Temp Sensor Range: -40 Degree C/F - 300 Degree C/575 Degree F Fan Air Flow: 147 CFM Power Requirements: 12V DC Only Amp Draw: 3 Amps Watt Draw: 30 Watts Physical Dimensions: 210 x 120 x 85mm (8.2 x 4.7 x 3.3") Physical Weight: 23 oz. (652g) Screen Size: 23.7x13.6mm (.93x.53in)